*{
    padding: 0;
    margin: 0;
}
ul,li{
    list-style: none;
}
.fl{
    float: left;
}
.fr{
    float: right;
}
.df{
    display: flex;
}
.bold{
    font-weight: bold;
}
.line{
    font-weight: bold;
    color: #ccc;
}
a{
    text-decoration: none;
    color: #666;
    padding: 0 10px;
}
.red{
    color: red;
}
.green{
    color: green;
}